When a screw guge is completely closed , zero of circular sclae is 7 diovisions above the reference line of graduation . If L.C. of screw gauge is 10-3 cm , the zero error is?? a) -7*10-3cm b)+7*10-3cm c)-0.007mm d)+0.007mm
1kisne kahah .................. arey a hi hoga na........
dkeh for
screw guage ...... main scale zero aage means + zero error........
nn for vernier scale
main scale zero.......aage means to d left means positive error..
yahn unhone vernier scale zero..rite bataya hai..means main scale zero aage
1ab yeh a kyon hoga..?? tumhare cncpt se to yeh b) hona chahiye!1
1I too think so... but they are asking for the correction ::: and -ve zero error has +ve correction
1we had this in 11th bt i dddnt study
wait i'll reply in few while afta goi n thru ma 11th buks
bt i 4gt wer i dumpd ma 11th buks
1yeah itz a
c wen d main scale zero or say refrnce line zero is bove d circular zero then itz +ve zero error
bt if
d main scale zero is belwo d circular zero then itz negative zero error
so itz a
since itz given that
d circular scale zero is bove d main scale zero by 7 divisions
wich means that d main scale zero is bewlo circular scale zero
cheero~
1http://www.tutorvista.com/content/physics/physics-i/measurement-and-experimentation/micrometer.php
go here... its awesome..
1hey can sumone post sum theroy n formulas related to this instrumnt plez
m nt findin ma buks
1nope strangely it is a. I too got it b....
kyon ki yeh -ve zero error hain toh correction mein +ve hoga!!
